stealthair

Have a 2000 Ws6, ordered ms4, prc ls6 heads, pace setters L/T's, I have a 6.0L out of a 2003 truck, and thinking bout swapin it, will the h/c work with the 6.0L? Would the difference in cubes make more power and be worth the swap?

stealthair

Anybody?

1fstbird

iTrader: (19)

Dont mark my words but I think that it will work. The extra cubic inches will net you a few mores ponies over the 346. I dont think the difference will be extraordinary.

Black Z28 M6

Of coarse the 6.0 is better. They both share the same crank(stroke)(3.62") and the bore is 4.000" vs. 3.897". You get more torq at the starting point and throughout the power band and it will get you more HP. Havent you heard "bigger is better".
15ftlbs torq throughout the power band.
Multiply [ torq x RPM x 5252 = HP ]

jay_99z

iTrader: (5)

Bigger is better....unless you are talking about weight. I think the weight will cancel out the extra hp. Aluminum vs. iron.

Black Z28 M6

Oh **** . My bad. I thought it was aluminum
In that case scerw that

AmericanMuscle313

iTrader: (5)

In this case you or whoever does your H/C swap needs to check piston to valve clearance. The PRC LS6 heads are meant for the smaller bore ls1/6 where as the 6.0L has a 4.00inch bore. The heads will still work fine. The important thing is to check P/V clearance. Usually most guys switch to the 6.0L iron truck block for 3 reasons; 1) they do a 408 stroker 2)run a big shot of Nitrous (250+) 3)or because of the added strength when going forced induction (supercharger or turbo). The weight difference is a disadvantage but you can always take out weight in other areas to make up for it. The ms4 cam is pretty large and larger cams usually like more displacement but when it comes to cams BIGGER IS NOT ALWAYS BETTER! The question for you is whether or not its a lq4 block or a lq9. The lq4 pistons (if they are still stock) are low compression pistons. With a 72cc chamber and the lq4 pistons you will get a static compression ratio of about 9.4:1. With the lq9 pistons you will get about 10.5:1. What is the chamber size of your heads?

Basically you need to calculate the dynamic compression ratio to see if the drop in compression will still yield gains with your head and cam combo. I would call Texas speed and ask them about your setup.


Cliff notes:Find out if its a lq4 or lq9. Calculate your dynamic Compression with your cam and heads. Check piston to valce clearance. Flycut if neccessary.